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Unformatted text preview: correction is needed. The overburden correction is: 41 1200 2000 60 60 , 1 psf psf N N 2. A Shelby tube for sampling has an outside diameter of 3 inches and a wall thickness of 1/16 in. Compute the area ratio of the sampler. Area ratio is the ratio of the annular crosssectional area of the sampler tube to the circular cross sectional area of the sampler itself. Area ratios of less than about 15% are needed for undisturbed samples: % 8 . 8 4918 . 6 4918 . 6 068 . 7 ) 16 1 5 . 1 ( ) 16 1 5 . 1 ( ) 5 . 1 ( 2 2 2 2 2 2 r r r A I R 3. Work Problem 3.7 in Coduto 4. Work Problem 3.9 in Coduto 5. Work Problem 3.26 in Coduto...
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 Spring '11
 Rosenblad
 Civil Engineering, Geotechnical Engineering, Ratio, Work problem, Coduto

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